 /*******************************************************************************
  * Copyright (c) 2006, 2007 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM - Initial API and implementation
  *******************************************************************************/
 package org.eclipse.update.internal.jarprocessor;

 import java.io.File ;
 import java.io.IOException ;
 import java.util.List ;
 import java.util.Properties ;
 import java.util.Set ;

 /**
  * @author aniefer@ca.ibm.com
  *
  */
 public class PackUnpackStep extends PackStep {
     private Set exclusions = null;

     public PackUnpackStep(Properties options) {
         super(options);
         exclusions = Utils.getPackExclusions(options);
     }

     public PackUnpackStep(Properties options, boolean verbose) {
         super(options, verbose);
         exclusions = Utils.getPackExclusions(options);
     }

     public String recursionEffect(String entryName) {
         if (canPack() && entryName.endsWith(".jar") && !exclusions.contains(entryName)) { //$NON-NLS-1$
 return entryName;
         }
         return null;
     }

     /* (non-Javadoc)
      * @see org.eclipse.update.internal.jarprocessor.PackStep#postProcess(java.io.File, java.io.File, java.util.LinkedList)
      */
     public File postProcess(File input, File workingDirectory, List containers) {
         if (canPack() && packCommand != null && input != null) {
             Properties inf = Utils.getEclipseInf(input, verbose);
             if (!shouldPack(input, containers, inf))
                 return null;
             File tempFile = new File (workingDirectory, "temp_" + input.getName()); //$NON-NLS-1$
 try {
                 String [] tmp = getCommand(input, tempFile, inf, containers);
                 String [] cmd = new String [tmp.length + 1];
                 cmd[0] = tmp[0];
                 cmd[1] = "-r"; //$NON-NLS-1$
 System.arraycopy(tmp, 1, cmd, 2, tmp.length - 1);

                 int result = execute(cmd, verbose);
                 if (result == 0 && tempFile.exists()) {
                     File finalFile = new File (workingDirectory, input.getName());
                     if (finalFile.exists())
                         finalFile.delete();
                     tempFile.renameTo(finalFile);
                     return finalFile;
                 } else if (verbose) {
                     System.out.println("Error: " + result + " was returned from command: " + Utils.concat(cmd)); //$NON-NLS-1$ //$NON-NLS-2$
 }
             } catch (IOException e) {
                 if (verbose)
                     e.printStackTrace();
                 return null;
             }
         }
         return null;
     }

     /* (non-Javadoc)
      * @see org.eclipse.update.internal.jarprocessor.PackStep#preProcess(java.io.File, java.io.File, java.util.LinkedList)
      */
     public File preProcess(File input, File workingDirectory, List containers) {
         return null;
     }

     public String getStepName() {
         return "Repack"; //$NON-NLS-1$
 }
 }

